9,9-(η2-2,2′-Bipyridin)-2,7-bis(t-butyl)-dibenzoplatinol (C30H32N2Pt): Molekül- und Kristallstruktur

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Abstract

Crystals of 9,9-(η2-2,2′-bipyridine)-2,7-bis(t-butyl)-dibenzoplatinol are monoclinic, space group P21/a; a 17.874, b 9.849, c 15.123 Å; α = γ = 90.00, β 109.51°; Z = 4; Dx 1.629, Dm 1.628 g cm−3, flotation method in CCl4/CHBr3; M = 615.7; Mo-Kα 0.71069 Å, graphite monochromator; F(000) = 1219.82; T 295 K; of the 4416 measured reflexions, 3513 were taken as observed; final R = 0.0528. Bipyridine and 4,4′-disubstituted biphenyl ligand are strongly distorted from the coplanar orientation and as a consequence the single molecule contains no symmetry element. In the unit cell both enantiomers of the chiral molecules are symmetrically oriented pairwise with respect to the axis of symmetry.

Zusammenfassung

Die Kristalle von 9,9-(η2-2,2′-Bipyridin)-2,7-bis(t-butyl)-dibenzoplatinol sind monoklin, Raumgruppe P21/a; a 17.874, b 9.849, c 15.123 Å; α = γ = 90.00°, β 109.51°; Z = 4; Dx 1.629, Dm 1.628 g cm−3, Flotations-Verfahren in CCl4/CHBr3. M = 615.7; Mo-Kα 0.71069 Å, Graphit-Monochromator; F(000) = 1219.82; T 295 K; 4416 gemessene Reflexe, 3513 davon als beobachtet genommen; endgültiger R-Wert 0.0528. Bipyridin- und 4,4′-disubstituierter Biphenyl-Ligand sind so weitgehend aus der ebenen Anordnung deformiert, dass die Einzelmoleküle kein Symmetrieelement mehr enthalten. Die beiden Enantiomeren der chiralen Einzelmoleküle sind in der Elementarzelle paarweise inversionssymmetrisch zueinander angeordnet.

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